TAMPA — Lightning forward Sean Bergenheim, who leads all postseason players with nine goals, is out for Game 6 of the Eastern Conference finals due to an undisclosed lower body injury.After six shifts and 4:19 of ice time in the first period, Bergenheim left Monday’s Game 5 with the injury. He skated Wednesday morning and was considered questionable for Game 6. Bergenheim had two goals through the series’ first five games.